LASER LIGHT-SOURCE APPARATUS AND LASER PULSE LIGHT GENERATING METHOD

摘要

This laser light-source apparatus comprises: fiber amplifiers 20, 30 and a solid-state amplifier 50 that amplify pulse light output from a seed light source 10 that is a first light source; non-linear optical elements 60, 70 that convert the wavelength of pulse light output from the solid-state amplifier; an optical switch element 40 that allows or blocks the propagation of pulse light from the fiber amplifiers to the solid-state amplifier; a second light source 11 that is disposed upstream of the solid-state amplifier, and the light from which can be combined with the pulse light output from the seed light source; and a control unit 100 that at least controls the optical switch element 40 so as to block the propagation of light during the output of pulse light from the seed light source 10, and controls the oscillation of the second light source 11. It is thus possible to temporarily stop the output of pulse light without stopping an excitation light source, and avoid a reduction in beam propagation characteristics immediately after output is restarted.